Changing responsive menu icon from hamburger to a custom one in Genesis. Screenshot: http://i.imgur.com/27i9vFN.png. "content" codes can be obtained from http://melchoyce.github.io/dashicons/.

functions.php

//* Enqueue Dashicons
add_action( 'wp_enqueue_scripts', 'dashicons' );
function dashicons() {

	wp_enqueue_style( 'themename-style', get_stylesheet_uri(), array( 'dashicons' ), '1.0' );

}

style.css

#responsive-menu-icon::before {
	font-family: "dashicons";
	content: "\f346";
}